<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>节流</title>
    <script src="lodash.js"></script>
</head>

<body>
    <div>
        <h1>我是计数器<span>0</span></h1>
        <button>点击我加一</button>
    </div>
</body>

</html>
<script>
    // 节流:在规定的间隔时间内不会重复触发回调,只有大于这个时间间隔才会触发回调，把频繁触发变为少量触发
    let span = document.querySelector('span')
    let btn = document.querySelector('button')
    let count = 0
    btn.onclick = _.throttle(function () {
        count++;
        span.innerHTML = count
    }, 1000)
</script>